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Proxy Statement Pursuant to Section 14(a) of the Securities
Exchange Act of 1934 (Amendment No.            )


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  Juniper Networks, Inc.  
  (Name of Registrant as Specified In Its Charter)  
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See the reverse side of this notice to obtain proxy materials and voting instructions. E38237-P04066 You are receiving this communication because you hold shares in the company named above. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. JUNIPER NETWORKS, INC. *** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting to Be Held on May 24, 2018. JUNIPER NETWORKS, INC. ATTN: INVESTOR RELATIONS 1133 INNOVATION WAY SUNNYVALE, CA 94089 Meeting Information Meeting Type: Annual Meeting For holders as of: March 29, 2018 Date: May 24, 2018 Time: 9:00 a.m. Pacific time Location: Juniper Networks, Inc. 1133 Innovation Way Building A Aristotle Conference Room Sunnyvale, CA 94089




E38238-P04066 How to View Online: Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line. Proxy Materials Available to VIEW or RECEIVE: ? XXXX XXXX XXXX XXXX ? XXXX XXXX XXXX XXXX Before You Vote How to Access the Proxy Materials How To Vote Please Choose One of the Following Voting Methods Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 10, 2018 to facilitate timely delivery. LTR/NPS/10K COMBO ? XXXX XXXX XXXX XXXX




Voting Items 1. Election of Directors Nominees: The Board of Directors recommends you vote FOR the following: 2. Ratification of Ernst & Young LLP, an independent registered public accounting firm, as auditors. 3. Approval of a non-binding advisory resolution on executive compensation. 1a. Robert M. Calderoni 1b. Gary Daichendt 1c. Kevin DeNuccio 1d. James Dolce 1e. Mercedes Johnson 1f. Scott Kriens 1g. Rahul Merchant 1h. Rami Rahim 1i. William R. Stensrud The Board of Directors recommends you vote FOR proposals 2 and 3. The Board of Directors recommends you vote AGAINST proposal 4. 4. Stockholder Proposal, if properly presented at the meeting, to annually disclose EEO-1 data. E38239-P04066